对于maven的项目构建和依赖管理在这里先不做详细配置介绍,之后应该会做详细的补充,今天先写写在maven聚合工程中对于SSM的配置整合(提到的其他配置暂不做说明),这里也会贴出整合之后的配置代码,整合过程一笔带过:
整合思路:1、Dao层的整合 2、service层的整合 3、表现层的整合
1、对于Dao层的整合,无非就是对数据库的操作配置,整合之前,在mybatis操作数据库的配置文件中(SqlMapConfig.xml)可以配置通过db.propertie配置数据库连接池(JDBC DBCP C3P0 Druid等),扫描mapper配置文件,
配置SqlSessionFactory,对pojo起别名等(使用逆向工程生成pojo和mapper不必要再起别名)
在spring整合mybatis后,对于mybatis的配置,我们只需在构建项目的dao层中的resourses中配置SqlMapConfig.xml文件即可(是否起别名看个人喜好或者使用逆向工程没必要起),因为对于数据库的操作被spring接管,所以我们在dao层中的resourses中配置applicationContext-dao.xml文件,在此文件中配置dataSource(通过db.properties),sqlSessionFactory,扫描mapper。到此,Dao层的整合大致完善。
SqlMapConfig.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<package name="com.xxx.xxx.pojo"/>
</typeAliases>
</configuration>
applicationContext-dao.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd ">
<!-- db.properties -->
<!-- 数据源 -->
<context:property-placeholder location="classpath:mybatis/db.properties"/>
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 配置SqlSessionfactory -->
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"></property>
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置Mapper扫描 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.xxx.xxx.mapper"></property>
</bean>
</beans>
2、对于Service层的整合,就是通过spring对service的扫描,但为了脉络的清晰,我们在聚合工程中service层的sources中配置applicationContext-service.xml,在此配置文件中除了约束就是我们对service层的扫描。
其外由于service层是我们操作CURD的层面,所以在service层我们需要一个事务,进而我们就再次配置applicationContext-tx.xml(配置事务管理器,通知,切面等)
applicationContext-service.xml文件
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd ">
<context:component-scan base-package="com.xxx.xxx.service"></context:component-scan>
</beans>
applicationContext-tx.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
<!-- 事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 传播行为 -->
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
<tx:method name="select*" propagation="SUPPORTS" read-only="true" />
<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 切面 -->
<aop:config>
< aop:advisor advice-ref="txAdvice" pointcut="execution(* com.xxx.xxx.service.*.*(..))" />
</aop:config>
</beans>
3、对于表现层的整合,我们体现在springmvc.xml中,其中有对controller的扫描;注解驱动加载处理器映射器,处理器适配器,视图解析器(配置前后缀可简化action返回某个jsp代码),配置拦截与放行,异常处理器,上传文件解析器等
springmvc.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd ">
<context:component-scan base-package="com.xxx.xxx.controller"></context:component-scan>
<!--这个是我上传文件的路径properties文件-->
<context:property-placeholder location="classpath:spring/conf.properties"/>
<!-- 注解驱动可以自动加载最新的处理器映射器和处理器适配器 -->
<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
< property name="prefix" value="/WEB-INF/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 释放被拦截的静态资源 -->
<mvc:default-servlet-handler/>
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<mvc:exclude-mapping path="/user/**"/>(窄划路径下放行)
<mvc:exclude-mapping path="/xxx/**"/>(窄划路径下放行)
<mvc:exclude-mapping path="/css/**"/>
<mvc:exclude-mapping path="/js/**"/>
<mvc:exclude-mapping path="/img/**"/>
<mvc:exclude-mapping path="/fonts/**"/>
<bean class="com.xxx.xxx.interceptor.xxxInterceptor"></bean>(interceptor拦截)
</mvc:interceptor>
</mvc:interceptors>
<bean class="com.jnmd.exception.HandlerException"></bean>(异常处理)
<!--文件上传-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="512000"></property>
</bean>
</beans>
最后就是web.xml的配置,作为项目的核心配置,需要配置springmvc前端控制器DispatcherServlet,再通过指定springmvc在classpath的路径加载springmvc;还需加载spring容器并指定applicationContext在classpath下的路径;
另外,web.xml中还需配置解决post乱码的filter
web.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name></display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 可以解决POST乱码问题 -->
<filter>
<filter-name>encoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 设置编码参是UTF8 -->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 两者相结合,可以将Spring配置web容器中 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext-*.xml</param-value>
</context-param>
</web-app>